This document describes differences between the 5.12.2 release and the 5.12.3 release.

If you are upgrading from an earlier release such as 5.12.1,
first read perl5122delta,
which describes differences between 5.12.1 and 5.12.2.
The major changes made in 5.12.0 are described in perl5120delta.

You can now use the keys, values, each builtin functions on arrays (previously you could only use them on hashes). See perlfunc for details. This is actually a change introduced in perl 5.12.0, but it was missed from that release's perldelta.

A number of regressions on VMS have been fixed. In addition to minor cleanup of questionable expressions in vms.c, file permissions should no longer be garbled by the PerlIO layer, and spurious record boundaries should no longer be introduced by the PerlIO layer during output.

If you find what you think is a bug, you might check the articles recently posted to the comp.lang.perl.misc newsgroup and the perl bug database at http://rt.perl.org/perlbug/ . There may also be information at http://www.perl.org/ , the Perl Home Page.

If you believe you have an unreported bug, please run the perlbug program included with your release. Be sure to trim your bug down to a tiny but sufficient test case. Your bug report, along with the output of perl -V, will be sent off to perlbug@perl.org to be analysed by the Perl porting team.

If the bug you are reporting has security implications, which make it inappropriate to send to a publicly archived mailing list, then please send it to perl5-security-report@perl.org. This points to a closed subscription unarchived mailing list, which includes all the core committers, who will be able to help assess the impact of issues, figure out a resolution, and help co-ordinate the release of patches to mitigate or fix the problem across all platforms on which Perl is supported. Please only use this address for security issues in the Perl core, not for modules independently distributed on CPAN.